.def("__len__", &Sequence::size, "return the length of the sequence")
.def("__repr__", &Sequence::get_sequence, "display as string")
.def("__str__", &Sequence::get_sequence, "cast to string")
.def("__len__", &Sequence::size, "return the length of the sequence")
.def("__repr__", &Sequence::get_sequence, "display as string")
.def("__str__", &Sequence::get_sequence, "cast to string")